INFO: task syz.0.17:524 blocked for more than 122 seconds.
Not tainted 6.17.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.17 state:D stack:0 pid:524 tgid:523 ppid:480 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1370/0x1d00 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0xe0/0x280 kernel/sched/core.c:7058
io_schedule+0x89/0xe0 kernel/sched/core.c:7903
folio_wait_bit_common+0x57a/0x8e0 mm/filemap.c:1317
folio_wait_bit+0x29/0x50 mm/filemap.c:1456
folio_wait_writeback+0x90/0x1c0 mm/page-writeback.c:3124
__filemap_fdatawait_range+0x147/0x210 mm/filemap.c:539
file_write_and_wait_range+0x287/0x340 mm/filemap.c:798
v9fs_file_fsync+0xec/0x1d0 fs/9p/vfs_file.c:418
vfs_fsync_range+0x116/0x1c0 fs/sync.c:187
generic_write_sync include/linux/fs.h:3042 [inline]
netfs_file_write_iter+0x3dd/0x4b0 fs/netfs/buffered_write.c:494
v9fs_file_write_iter+0xac/0xe0 fs/9p/vfs_file.c:407
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x6e9/0xef0 fs/read_write.c:686
ksys_write+0x142/0x250 fs/read_write.c:738
__do_sys_write fs/read_write.c:749 [inline]
__se_sys_write fs/read_write.c:746 [inline]
__x64_sys_write+0x7f/0x90 fs/read_write.c:746
x64_sys_call+0x2755/0x2fd0 arch/x86/include/generated/asm/syscalls_64.h:2
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x62/0x160 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7efc6b38ebe9
RSP: 002b:00007efc6c125038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007efc6b5b5fa0 RCX: 00007efc6b38ebe9
RDX: 0000000000007fec RSI: 0000200000000300 RDI: 0000000000000007
RBP: 00007efc6b411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007efc6b5b6038 R14: 00007efc6b5b5fa0 R15: 00007ffc198780b8
INFO: task syz.5.20:526 blocked for more than 123 seconds.
Not tainted 6.17.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.20 state:D stack:0 pid:526 tgid:525 ppid:485 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1370/0x1d00 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0xe0/0x280 kernel/sched/core.c:7058
io_schedule+0x89/0xe0 kernel/sched/core.c:7903
folio_wait_bit_common+0x57a/0x8e0 mm/filemap.c:1317
folio_wait_bit+0x29/0x50 mm/filemap.c:1456
folio_wait_writeback+0x90/0x1c0 mm/page-writeback.c:3124
__filemap_fdatawait_range+0x147/0x210 mm/filemap.c:539
file_write_and_wait_range+0x287/0x340 mm/filemap.c:798
v9fs_file_fsync+0xec/0x1d0 fs/9p/vfs_file.c:418
vfs_fsync_range+0x116/0x1c0 fs/sync.c:187
generic_write_sync include/linux/fs.h:3042 [inline]
netfs_file_write_iter+0x3dd/0x4b0 fs/netfs/buffered_write.c:494
v9fs_file_write_iter+0xac/0xe0 fs/9p/vfs_file.c:407
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x6e9/0xef0 fs/read_write.c:686
ksys_write+0x142/0x250 fs/read_write.c:738
__do_sys_write fs/read_write.c:749 [inline]
__se_sys_write fs/read_write.c:746 [inline]
__x64_sys_write+0x7f/0x90 fs/read_write.c:746
x64_sys_call+0x2755/0x2fd0 arch/x86/include/generated/asm/syscalls_64.h:2
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x62/0x160 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f29ed58ebe9
RSP: 002b:00007f29ee470038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f29ed7b5fa0 RCX: 00007f29ed58ebe9
RDX: 0000000000007fec RSI: 0000200000000300 RDI: 0000000000000007
RBP: 00007f29ed611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f29ed7b6038 R14: 00007f29ed7b5fa0 R15: 00007ffe33be4838
INFO: task syz.1.18:528 blocked for more than 123 seconds.
Not tainted 6.17.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.18 state:D stack:0 pid:528 tgid:527 ppid:482 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1370/0x1d00 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0xe0/0x280 kernel/sched/core.c:7058
io_schedule+0x89/0xe0 kernel/sched/core.c:7903
folio_wait_bit_common+0x57a/0x8e0 mm/filemap.c:1317
folio_wait_bit+0x29/0x50 mm/filemap.c:1456
folio_wait_writeback+0x90/0x1c0 mm/page-writeback.c:3124
__filemap_fdatawait_range+0x147/0x210 mm/filemap.c:539
file_write_and_wait_range+0x287/0x340 mm/filemap.c:798
v9fs_file_fsync+0xec/0x1d0 fs/9p/vfs_file.c:418
vfs_fsync_range+0x116/0x1c0 fs/sync.c:187
generic_write_sync include/linux/fs.h:3042 [inline]
netfs_file_write_iter+0x3dd/0x4b0 fs/netfs/buffered_write.c:494
v9fs_file_write_iter+0xac/0xe0 fs/9p/vfs_file.c:407
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x6e9/0xef0 fs/read_write.c:686
ksys_write+0x142/0x250 fs/read_write.c:738
__do_sys_write fs/read_write.c:749 [inline]
__se_sys_write fs/read_write.c:746 [inline]
__x64_sys_write+0x7f/0x90 fs/read_write.c:746
x64_sys_call+0x2755/0x2fd0 arch/x86/include/generated/asm/syscalls_64.h:2
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x62/0x160 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f383058ebe9
RSP: 002b:00007f3831409038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f38307b5fa0 RCX: 00007f383058ebe9
RDX: 0000000000007fec RSI: 0000200000000300 RDI: 0000000000000007
RBP: 00007f3830611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f38307b6038 R14: 00007f38307b5fa0 R15: 00007fff440fc778
INFO: task syz.2.21:532 blocked for more than 123 seconds.
Not tainted 6.17.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.21 state:D stack:0 pid:532 tgid:531 ppid:486 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1370/0x1d00 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0xe0/0x280 kernel/sched/core.c:7058
io_schedule+0x89/0xe0 kernel/sched/core.c:7903
folio_wait_bit_common+0x57a/0x8e0 mm/filemap.c:1317
folio_wait_bit+0x29/0x50 mm/filemap.c:1456
folio_wait_writeback+0x90/0x1c0 mm/page-writeback.c:3124
__filemap_fdatawait_range+0x147/0x210 mm/filemap.c:539
file_write_and_wait_range+0x287/0x340 mm/filemap.c:798
v9fs_file_fsync+0xec/0x1d0 fs/9p/vfs_file.c:418
vfs_fsync_range+0x116/0x1c0 fs/sync.c:187
generic_write_sync include/linux/fs.h:3042 [inline]
netfs_file_write_iter+0x3dd/0x4b0 fs/netfs/buffered_write.c:494
v9fs_file_write_iter+0xac/0xe0 fs/9p/vfs_file.c:407
new_sync_write fs/read_write.c:593 [inline]
vfs_write+0x6e9/0xef0 fs/read_write.c:686
ksys_write+0x142/0x250 fs/read_write.c:738
__do_sys_write fs/read_write.c:749 [inline]
__se_sys_write fs/read_write.c:746 [inline]
__x64_sys_write+0x7f/0x90 fs/read_write.c:746
x64_sys_call+0x2755/0x2fd0 arch/x86/include/generated/asm/syscalls_64.h:2
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x62/0x160 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f2435d8ebe9
RSP: 002b:00007f2436b1f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f2435fb5fa0 RCX: 00007f2435d8ebe9
RDX: 0000000000007fec RSI: 0000200000000300 RDI: 0000000000000007
RBP: 00007f2435e11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2435fb6038 R14: 00007f2435fb5fa0 R15: 00007fff05898618
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.17.0-rc2-syzkaller #0 PREEMPT 6852c32cef9577826c33c0cb662873ee4eff9e1d
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
__dump_stack+0x21/0x30 lib/dump_stack.c:94
dump_stack_lvl+0x10b/0x180 lib/dump_stack.c:120
dump_stack+0x19/0x20 lib/dump_stack.c:129
nmi_cpu_backtrace+0x2bd/0x2d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline]
watchdog+0xc2c/0xc80 kernel/hung_task.c:491
kthread+0x6f4/0x880 kernel/kthread.c:463
ret_from_fork+0x14a/0x1f0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.17.0-rc2-syzkaller #0 PREEMPT 6852c32cef9577826c33c0cb662873ee4eff9e1d
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:hrtimer_get_expires include/linux/hrtimer.h:135 [inline]
RIP: 0010:hrtimer_reprogram+0x6c/0x3e0 kernel/time/hrtimer.c:814
Code: 00 74 05 e8 e6 9c 69 00 48 8b 45 c8 4c 8b 78 30 4c 8d 70 18 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 c4 9c 69 00 <4d> 8b 36 4d 8d 67 38 4c 89 e0 48 c1 e8 03 42 80 3c 28 00 74 08 4c
RSP: 0018:ffffffff87207bc8 EFLAGS: 00000046
RAX: 1ffff1103edc5055 RBX: ffff8881f6e28290 RCX: ffffffff87217340
RDX: 0000000000000000 RSI: 0000000000000010 RDI: ffff8881f6e282c0
RBP: ffffffff87207c10 R08: ffff8881f6e282a7 R09: 0000000000000000
R10: ffff8881f6e28298 R11: ffffed103edc5055 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8881f6e282a8 R15: ffff8881f6e27d00
FS: 0000000000000000(0000) GS:ffff88826e591000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558add84a8 CR3: 000000010b39e000 CR4: 00000000003526b0
Call Trace:
hrtimer_start_range_ns+0x16a9/0x2170 kernel/time/hrtimer.c:1330
hrtimer_start_expires include/linux/hrtimer.h:277 [inline]
tick_nohz_restart kernel/time/tick-sched.c:845 [inline]
tick_nohz_restart_sched_tick+0x192/0x1d0 kernel/time/tick-sched.c:1103
tick_nohz_idle_update_tick kernel/time/tick-sched.c:1427 [inline]
tick_nohz_idle_exit+0x2a6/0x3b0 kernel/time/tick-sched.c:1470
do_idle+0x3f3/0x470 kernel/sched/idle.c:343
cpu_startup_entry+0x48/0x70 kernel/sched/idle.c:428
rest_init+0x10b/0x130 init/main.c:744
start_kernel+0x3a4/0x3db init/main.c:1097
x86_64_start_reservations+0x28/0x30 arch/x86/kernel/head64.c:307
x86_64_start_kernel+0x147/0x1cb arch/x86/kernel/head64.c:288
common_startup_64+0x13b/0x157